2101231234312 has 64 divisors (see below), whose sum is σ = 4599143280000. Its totient is φ = 899623263168.

The previous prime is 2101231234231. The next prime is 2101231234313. The reversal of 2101231234312 is 2134321321012.

It is a super-2 number, since 2×2101231234312² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2101231234313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2351739 + ... + 3119797.

It is an arithmetic number, because the mean of its divisors is an integer number (71861613750).

Almost surely, 2^{2101231234312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101231234312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2299571640000).

2101231234312 is an abundant number, since it is smaller than the sum of its proper divisors (2497912045688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101231234312 is an equidigital number, since it uses as much as digits as its factorization.

2101231234312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769083 (or 769065 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 2101231234312 its reverse (2134321321012), we get a palindrome (4235552555324).

The spelling of 2101231234312 in words is "two trillion, one hundred one billion, two hundred thirty-one million, two hundred thirty-four thousand, three hundred twelve".